57478079 has 2 divisors, whose sum is σ = 57478080. Its totient is φ = 57478078.

The previous prime is 57478051. The next prime is 57478093. The reversal of 57478079 is 97087475.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57478079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57478009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28739039 + 28739040.

It is an arithmetic number, because the mean of its divisors is an integer number (28739040).

Almost surely, 2^57478079 is an apocalyptic number.

57478079 is a deficient number, since it is larger than the sum of its proper divisors (1).

57478079 is an equidigital number, since it uses as much as digits as its factorization.

57478079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 57478079 is about 7581.4298783277. The cubic root of 57478079 is about 385.9230765665.

The spelling of 57478079 in words is "fifty-seven million, four hundred seventy-eight thousand, seventy-nine".